Apparatus for pressing plate-metal articles.



A. STUCKI.

APPARATUS YOK PRESSING PLATE METAL ARTICLES.

APPLTOATIOK FILED HAYES, 190B 3 SHEBTB SHBBT 1.

zm/mg morw A. STUCKI. APPARATUS FOR PRESSING PLATE METAL ARTICLES.

ABPLIGATION FILED MAY25,1908.

3 SHEETS-$513311 2w Patented July 23, 1912.

A. STUGKL APPARATUS FOR PRESSTNG Z LATE ME'EAL ARTICLES.

APPLICATION FILED MAY 190av 1,033,209. Patented July 23, 1912.

3 SHEETS-*SHEET 3.

UNITED STATES AT NT OFFICE ARNOLD s'rUck' -oF PIT TSBURGH, rE NSYLV NIA.

To all whom it may cohcern Be itknown that I, ARNOLD. S'rUcKnfa resident of Pittsbur h, in the county of Allegheny and State 01 Pennsylvania, have invented a new "andfuseful Iniprovement in Apparatus for Pressing Plate-Metal Articles, of which the following isa specification.

This invention relates" to apparatus for pressing, drawing and she ing plate rntal. The object is to providii apparatusifor pressing hollow plate inetaherticles siderablej d epth a nd eyen of irregular 3 ape, easily, economically and with exactness. This object is accomplished by the eons, struction and arrangement. of parts hereinafter described and elaimed. y

In the ac c'ornpanying drawings Figure 1 a view showing the tifihrix orfemale die in vertical section a ndltlie'plunger or male die and the holding die in side elevation, showing the parts in the first posit-ion; Fig, 2 is nsnnilarview showing the arts atthe -completion of the operation; ,3 .is. a

plan view ofthemhtrixor female die; Fig.

4 is a vertical section through thesame taken at right angles tothe sections of Figs. 1 and 2; Fig 5 is an. end elevation of'the plunger or maledie; Fi 6' is an inverted plan view. of the same; P ig. 7 is a sectional view illustratin the manner of stripping the pressed article frorn the plun er; and Fig. 8 is evertieal sectional detail illustrat- 7 ing the clamping plate in positionto receive a blank. i,

My improved apparatus comprises three main parts,.-namely, the matrix or'female ,die 1,- the plunger or. male die 2, .andthe clam inghor holding die 3, together with suitable holding and clamping means and guides to properly guide the metal to prevent the seme from buckling and folding. These parts may be shaped to press plate niet-el articles of various kinds. The dies shown in the drawings are designed for pressing plate metal railway journal boxes, but this has been selected-for illustration onl llhe matrix'is provided with a die cavity 5 of general rectangular shape having the front wall projecting inwardly near its bot flpeeihcation of Letters Patent, "Application me m 25, mos. Serial No 484,885.

the journal boxbolts.

Patented July 23, 1912.

"- from, as t 6, to form the lip of the'journal box, and having below the same the inwardly and downwardly curved portion 7 for forming the front curved face of the box. The sidewalls of the die are provided with grooves 8 to form corrugations in the side of the box fonthe jo urnal box bolts.

: The pliinger or male (lie is formed substantially as the complement of the matrix having its front face inclined inwardly,'as

its, side edges it is provided with ribs 121m walls of the box and with inwardly pro- 1 jecting ribs 9 to form grooves in the sides .at 10, to form the lip of the box, and below pressing the c'orrugationsnin the box and with'grooves 13 cooperating withthe ribs f the netrix for forming the grooves for Y On its lower face this plunger 18 provided with a rib 14 to of the box said rib be u '(iontinuous with i 1 I ,i

the side ribs 12. h I

The bottoniof the matrix is provided with an opem'ng'15 through which the holding or clamping die 3 projects. The upper end of this die is shaped to form substantially a bottom for the rna'trixwhen the dies are in theposition shown in face is, formed as the complement. of the bottom face of the iun er or maie-die'Q 7 h 9 being shown ns provided with a. transverse groove 16 which cooperates with the bottom rib 14:01] the plunger to form the transverse corrugation in the bottom of'the box. Obviously these perts may bes'heped as to press articles of different forms.

'' I The plate or blank to be pressed is indi cated at 17, Fig. 1; and the finished nrtiele is shown. in Figs. 2'and.?. v

Fig. 2, and its upper form a transverse corrugation in the bottom Thetop face of the matrix is provided at Q What IS termed its front end with a portion 19 slightlyhigher than its main top face to form a shoulder 20 against which the end of the blank is shoved to position the same. A partof each side wall at the die cavity is cut away so as to obtain a portion of less height, prefemb 21, and.a simill1r cutaway provided at them: wall ly sloping, as indieeteeet loo' portion 22 i8" 4 of he die cavity.

Secured to theiront end of the matrix is a clamping or holding plate 24 whose inner edge 25 projects into proximity to the front edge of the'die cavity, said plate being provided with two side projections or horns 26' projecting at the sides of the die cavity approximately. to the cut-away .portions 21 in the side walls thereof. This clam ing plate is spaced from the main top face'o the die by resting on the higher portion 19 and may be adjusted-in height-by inserting. shims between itself and the top face of the It. is secured to'the die'by' means of,'

die. bolts 01'' studs 27 projecting up through holes in the plate and provided at their upper ends witlrmeans for quickly releasing and clamping said plate. "The drawings Show for this purpose taper keys 28 driven through slots in the upper ends otthe bolts or studs. Obviously, other meiirisfsuch as" winged nuts might be employed. Formed in the body of the matrix are pockets 29 for springs 30 whidh bear against the lower face of the plate 24 inside ofits center'of grav ity so that when the taper keys 28 are driven back said springs tip the inner edge of said gripping plate upwardly, as'shown'in Fig.

8, to permit the ready insertion of the blank rear guides33, these being in the form of bars projecting inwardly and having vertical portions 34 which are secured to the side faces of the matrix by suitable means which permit vertical adjustment, such as bolts projecting through' slots- 36 in the guides;.

Theseguides are spaced from the top face of the matrix a greater distance thanthe elani 'iing plate 24. plate can be used, if

adjusted loosely. enoughso that the excess material is allowed to wave or'undulate, lint not to lap. The rear guides 33 have forn'ied thereon feet 38 which project baekwardly and then inwardly around the rear eoriiers of the die cavity, these feet being quite elose to the. top face of the bl'ank being pr sed' and serving to hold said blank at tl ei-rear corners of the die cavity in the, same manner that the plate 24- holds the plate at. thei'ro-nt end of the'cm'ity. The front plate Ill is so connected ;'that it can be noved bodil inwardly towalrd the die rarity, by providing slots -It) For the holding bolls or studs .27. 'lliese slots permil th plateto he. shoved inwardly o that. its inner wlge can act as a stripper to strip the arliele from the. plung r or-inalel die as n For lhe same purpps the. rear wall of the matrix is provided {with a. hole ll through which a bar l2 ean'be in sr-rh-d lo "ngag'e the rear edge of the pressed "article and strip the same from the plunger. The matrix is preferably made in two sections divided at its longitudinal center, as indicated by the line 43, in order to permita djustment 'to'press article's-of slightly different widths and to compensate for metal of varying-thickness. To enlarge the dies shims are. placed between the two sections thereof, The tivo sections are held together by means of bolts 44 passing through holes I in tlie die. All the dies may be hollow for watercoolingif desired. I a

In 'the use of'the apparatusfthe plunger or male die 2"i s "prferahly held stationary and the felnalc'die or matrix and clamping and holding member 3 are made movable, such as by mounting them on the plunger of suitable hydraulic presses. The matrix and holding die 3 are movable indepeiul; ently I" using 'the diesv the matriiiisbrought .level'vvith the bottoinbf the plunger 2', the plate is slipped infroin the rear against the shoulder 20 of the ofi' -set portion of the top of; tlie matrix, the sidesof the plate eoutaeting with thc vertical portions 34 of the inte'rmedi'ate and rear guides. 'lhis properly positions the blank and holds the same, against'shiftin"; The holding die, or rain, 3 is then brought plate tightly between itself and the. plunger or' male die 2,- said parts shaping the plate Ybetiveen tlieri1sclves, if provided with die faces as shown in'the drawings; The matrix or female the isthen' l2llF'(.(l 'l )tH(lll\ L[ and )ullin" theinetal u") owrtheumledie. This 'causes 'the pl ate' to take the exact. contour of'theinale' die, and it has been it'nnid'nn necessary to 'have'the (X i'ltEl ll U bottoln' poilIlOi'i of'the matrix, such as at 7, of the same contouras th'e'outside ot the artirle tohe shaped, as this portion of the ariiele is forn'ledv by the bending and pu'llinga'elion over the male die rather than by pressing betweenthe'n'iale and feinaledit-s. 'llu' l'ront grippingplate ii is in such proximity to the plate lhat' itfholds unt'ronl 'edge. of the plate] down; first, preventing the same from risihg'and buckling or lapping attheeorners'of thedie cavity, and se -o1ul,'e:ul's'ing3 the metal to be. forcedbarlrnzmlly along th'e sides'of the-die cavity. 'lhis movement ofthe in'etal is facilitated by having the side walls of the die cavity lower than at the front portion; This can be aeeolnplislual in 'i'u'iollS' ways one being by p|-o\'idin; the sloping portions 2| of le s height \\'liieh cause the metal to gradually How in that up and made to clamp the direelioln 'lhe'inlerHn-diale and rear guides;

32 and 33 are spaced eonsiderahly higher from the lop l'aee ol'dlre in trix than the front plate so as lo permit the edges of llle plate. to llst and lo l ulfiu liglllt wares ol' c rrugations and in that way l :ll(t'. (are ol' the metal in the edges of as: guides.

' the pressing is the surplus metal from the corners. They are,'however, so close to the top face of the matrix as to prevent the gatherin of the metal to form folds or over-laps. he foot portions 38 of the rear guides are much closer to the top face of the matrix and hold the .metal down at the rear corners of the die cavity and prevent it from buckling or lappin and also cause the superfluous metal to flow inwardly toward the central ortion of the rear end of the die cavity, this owing being facilitated by the cut-away portion-Q2 in said rear wall. ,The consequence is that the late is athered uniformly and distribute over a Fong distance instead of being all crowded at one or a few points, and without formin folds orlaps or leaving superfluous meta at any point. The feet 38 ma be separate figm and ad p istable indepen ently of the hey have practically the same on at the rear corners of the matrix as the clamping plate at the front corners. The dies have a com aratively long stroke so that the plate is fdroe'd into the matrix until the top edge of the article is below the cut-away portions'21 and 22 in the walls said dies.

The apparatus described is adapted for pressing any plate metal article of considerable depth and of any desired shape. This result is accomplished with ease, exactness and eoono with ease because all is ping, folding, wrinkling and undesired gatliering of metal is avoided; with' economy, because doneat one stroke; with exactness, because the plate is revented from shifting during operation an la )8 and folds are avoided so that the metal owe and is distributed uniformly'each time. This is accomplished by only two wer cylinders or forcing me hanisms one or elevating the clamping or liblding ram, and the other for lifting the matrix or female die. It is obvious, of course, that the matrix or even the holding ram may be held stationary, in which case the other dies will have to travel a to suit the respective arrangement.

An important feature of the construction iejnaking hrent heights in order to assist the clampmg plateaand guides in crowding the metal away from the corners, preventing the gathering at those points, surplus metal along a large space and after it gets there, allowing it to undulate uni formly, but not sufficiently to make laps or folds.

With the particular construction shown the main body of the journal box is formed b bending or pulling the metal over the Eunger, but the reverse lip is formed byringing the dies tightly together by the in-.' clined parts 6 and 10 on the matrix andplunger respectively.

What 13 claim is:

1:. Apparatus for drawing and shaping plate metal, comprising a stationary plunger, a matrix movable to strip the metal over said plunger, plate guides and grippers spaced from the upper face of said matrix, and a clamp member movable through the matrix and arranged to clamp the metal against the plunger, said plunger and inatrix having complementary shaping aces.

2. Apparatus for drawing and shaping plate metal, comprising a plunger and a non-circular matrix, and a gripping plate above said matrix at the points of abrupt change of the matrix walls and close enou h to the face thereof to hold the metal at t 1e points of excess gathering from buckling and force the same to flow to other places to secure a uniform distribution of the metal of the edges of the plate.

3. Apparatus for drawing and shaping plate metal, comprising a plunger and a matrix provided with a die cavity having corners or angles therein and straight sides. and guides positioned above the matrix at the straight sides of the die cavity but not extending continuously around the die cavity and spaced a suflicient distance from the face of the matrix to allow the edges of the plate to undulate and not to lap and thereby securing a gradual and uniform gathering of 'the meta 4. Apparatus for drawing and shaping plate metal, comprising a plunger and nonthe walls at the die cavity of'difdistributing the circular matrix, a clampin plate above said matrix and located in sucl i close proximity thereto as to hold the edges of the plate firom buckling and force excess metal to other places, and guides also located aboveihe matrix adjacent to said clamping plate and spaced from the matrix face for a greater distance than th allow the ed es of the plate to unrlulate but not to lap, tlierehy securing a gradual and uniform distribution of the metal of the edges of the plate.

5. Apparatus for drawing and shaping plate metal, comprising a plunger and a matrix provided with a die cavity having angles or corners therein and straight wall die cavity of lesser height at its straight sistance to the sidewise flow of the metal, and plate guides positioned above the matrix and spaced frpm the face thereof and not extending entirely around the cavity.

6. Apparatus for drawing and shaping plate metal,comprisinga piunger and anoncircular matrix, said matrix having the walls of its die cavity 01' greater height at the angles than at the straight portions, and (damping plate above said matrix and loclose thereto at the angles as to hold e clamping plate to portions, said matrix having the walls of its portions than at its angles to reduce the rethe edges 6 the-plate from buckling and fqrce the metal toward; die cavity havin'g'lo'w Wall's.

. 7.-Apparat.- l is for drawing fend -shap'ilig the 'Qortiin's of the P s ma d aliqv'the'matrix a'bthe' a:

plate metal, cinnDtx'sinig' '11 plunger. 'and 'a hen-circular matrix, said matrix having the;

.l'. Apparatus. for'il'rmving and "shaping 1 plate metal. eoniprising a; plunger and a 'ul'llhe plate l'iuln hurl (ling: amt-towing tilt" peints. a (lumping lnen'iher lm-ateil almve, Saul in'atrix al the lllL'flH'l pm'tuina. aml an ifllfiilhlil ll guide ha'ateitalviire the matrix at the-Ade ut the elamp'mg'memher-aml at a greater li lanee tln'refrmuthan the dampingplatr. It. Apparatus fun drawing and fillillllhg mints. a ela niin ilate huziteil alun'e said.

' therein and straight. all putillnns, a (1) i npi-a'ating plunger .a' gripper or draw plate plate metal, comprising a; plunger and n- Incated'at the angles or corners ofthe die czivityjahgl spaced from the. face of the 'trik, and guides also spaced from the face [of the matrix at -the' straight p m-t,-i0n s; 0 f "th'e'die cavity: l '1 3.1\'ppai:at-us for drawing and shapmgJO pl ate metal; emnpriing a ma-tri -tprpyi led wyith a-wrlie'earify having corncrs in: angles "therei n a (-nilpe1'ating plunger, a grippipg 5.

er (lrawin'g platespared from the face 5f the Zinatriy h) re ive {thepl'ate beh vee n itself arid said i natrix'faee. Said gripping pla'teie'xli'e,an1l faid matrix having tl em'allsf fw t a (lie ea'vifiv heyrmtl saiil lmhlingfplate lpiyer thanuiulerricath zahl hiyhlingplate. f Apparatus for 1rawihga1t(l' shaping plate. metal, comprising a matrixpu \;i(le(l With a :(l-ielaril) having; yearn ng.- (a: angles,, therein i 'enilperatingplunger; atgxippin H or drawmg'plate spaced from the-(ace. film 8" matrix in 'rereire -.the platelmtwben 1 self iinil' said matrix fil('(. said gnipping plate extemlinli arn nul alaenrners mhangleg hf "the liefs-ahlHiiatrixhaving thepwaljls 0f its l n\'e1"'lerer than underneath twii l landinglilalejaiul gui leaplma esaiil lower wall pur- .t'iun's tn prevent the plate flt)tll fultlll lg.;

'ppar'atns fur drawing aml iahap'i ng plate nietal; emn n-i.- in g a plu nger antl.a anatrix. the matrix having a cavity eflger eralreetaligiil:n-' sliape. a holding plau' at the angles in ("m'ners uf the (lie ea \'itt arltl vRpaeei-I t'runi the tup-' l'aee ut' v =I l 1th ,t ie valiant tlu' 1lie .earity t/a d matrix lie 10o ye'nijl qsairl' fielding plate heingxlpwer, than uinlerueath mid hnhlingplate; i

ahaping I 'p'lat'einetat. mnnpi'ising a Pllll'lflbl':\Iltl,tl;ll1 fl trixfthe matrix ha\i'u 1 aieavity. f gmieral 10rreetangular shape. a holding plate. at the 't'HIIHIZ S ut' the (lie unity and spared fi uni the hip fare nf saiel the the Walls f the aaildie eavitaunthxaiil inatrix heawiul saiil linhling plateheiug ll|\\tl than um'lerneath sai l hnhll-lu ing plate. and gl'iiile almte said linyer' m-- iltHlS U l the .ea\'il ',.\\'alls; v

t7. .\.pp:iratus fur (lrinuing alu'l shaping plate InetaL.emnprising a plulrgerflalul a .ulatrixi anilagripping plateappliwl' lathe liqylareuf saiil lll:\l |'lX,tllltl span-ml th'ere- .l'rt'n n, saiil gripping plate heil ig nunrntegl in naive imvanlly'v'ainl art as :1'r tlippe|.

I .-\pparatus l'i r drawing alnl aha-ping plate luttzll..(ulllln'lsihg i inatriiz. a ph'mgef120 arrah "ell tn enter the same. a gripping l2lll,:l| |lll l tn the .tup fare of theanatrix V at the'siile ut't he (lie entity and spae'eil lreu th fave )l' said matrix; pi'ingxifm lifting aii'l' plate. ine air tin ltltlilltfl'filial Plait; :in-l 1:3 a draw plate aim arrang daiwvethe matrix .anihapgu-eit [r in the ur irellul'eul I i lt Apparatus l'ur (l aning anil shaping guides also arranged above the matrix and 10 spaced from the face thereof.

In testimony whereof, I have hereunto set plate metal, comprising a matrix, a plunger arranged to enter the same, a gripping plate applied to the top face of the matrix at the side of the alie cavity, means securing said my hand.

7 plate to sai matrix springs arranged etween the matrix and the plate inside of the ARNOLD STUCK! center of gravity of the plate, whereby Witnesses:

when the securing means are released the WILLIAM I. KING,

inner edge of the plate is elevated, and F. W. WINTER. 

